Oil Filter Flow Direction - AJP8
Discussion
Can anyone confirm the direction of oil flow through the filter - centre --> outside, or outside --> centre.
Only reason I ask is that I've replaced the housing and the new one has an arrow indicating the flow is from outside --> centre, but looking at the original housing the oil went from the pump to the centre of the housing, then from the outside of the filter to the cooler, and back to feed the engine.
Also the new one leaks from the filter seal (and it's tight). I'm wondering if it's due to the change of flow direction through the filter?
Only reason I ask is that I've replaced the housing and the new one has an arrow indicating the flow is from outside --> centre, but looking at the original housing the oil went from the pump to the centre of the housing, then from the outside of the filter to the cooler, and back to feed the engine.
Also the new one leaks from the filter seal (and it's tight). I'm wondering if it's due to the change of flow direction through the filter?
No. I replaced the whole system a couple of years ago with one from SpeedFlow, using AN fittings etc. At the time I noticed the oil was going the wrong way through the old housing but put it down to "what was in the parts bin" at TVR. I replaced it with outside to centre - the correct way, but since then I've always had a slight drip from the filter.
This spring I replaced the housing again and noticed a small nic on the surface of the one I took off, but the new one's just the same - dripping. I've tried 2 different makes of filter but no joy.
I'm now contemplating putting the original TVR housing back on with the flow in the wrong direction to see if it makes a difference. Thought I would ask the question to see if it was deliberate for some reason?
This spring I replaced the housing again and noticed a small nic on the surface of the one I took off, but the new one's just the same - dripping. I've tried 2 different makes of filter but no joy.
I'm now contemplating putting the original TVR housing back on with the flow in the wrong direction to see if it makes a difference. Thought I would ask the question to see if it was deliberate for some reason?
notaping said:
Can anyone confirm the direction of oil flow through the filter - centre --> outside, or outside --> centre.
Only reason I ask is that I've replaced the housing and the new one has an arrow indicating the flow is from outside --> centre, but looking at the original housing the oil went from the pump to the centre of the housing, then from the outside of the filter to the cooler, and back to feed the engine.
Also the new one leaks from the filter seal (and it's tight). I'm wondering if it's due to the change of flow direction through the filter?
Wotcha Squire !Only reason I ask is that I've replaced the housing and the new one has an arrow indicating the flow is from outside --> centre, but looking at the original housing the oil went from the pump to the centre of the housing, then from the outside of the filter to the cooler, and back to feed the engine.
Also the new one leaks from the filter seal (and it's tight). I'm wondering if it's due to the change of flow direction through the filter?
The flow is in the direction of the wording....
Mr Cerbera said:
Hey Paul, thanks for that. Makes sense. From your picture then - when the housing is fixed to the chassis, the oil flow is IN from the front of the car and OUT to the back. Does that mean the oil path is from the pump to the cooler and then to the filter? Mine's filter first then cooler - so, housing in the other direction.I'm hoping to have another crack at it as soon as the weather dries up a bit.
Perhaps my initial post read a bit generic but I really meant have a look on your (V8) Cerbera and confirm the oil flow direction.
In any case - I have now fixed the leak and here's the result of my investigation in case it helps others in the future. PH is after all a repository of (useful) info
My confusion arose from the original housing I removed . . .
As you can see "normal" flow is from the left which indicates that the oil comes from the cooler to the filter which is the wrong way round. You can see from the attached hose (which was pump output) that it's going in through the out door on the housing - which gives you filter then cooler but wrong way through the filter.
I replaced the whole system a number of years ago and at the time reversed the housing direction and used one of these. . .
however, it always dripped oil. Earlier this year I noticed a nick on the seal face and replaced it with another of the same type. It also dripped.
I've now replaced it with one of these -
- and cured the leak. What you can see from the faces of the housings is that as well as the oil chamber being deeper, the seal on the filter sits futher back from the lip of the seal surface and I can only assume that if the rubber seal was slightly over this edge then the oil pressure would be applied to the face of the seal and allow oil to squeeze past - maybe?
, 
Looking at the very original housing it closely resembles my new replacement - except direction.
And the final installation. . .
Anyway - my initial query was meant more as a "was this by design?" and "what does yours look like?" (oo-err missus), but apparently not by design. My original oil system configuration was evidently an aberration. But then again - might be worth checking yours
Gordon
In any case - I have now fixed the leak and here's the result of my investigation in case it helps others in the future. PH is after all a repository of (useful) info
My confusion arose from the original housing I removed . . .
As you can see "normal" flow is from the left which indicates that the oil comes from the cooler to the filter which is the wrong way round. You can see from the attached hose (which was pump output) that it's going in through the out door on the housing - which gives you filter then cooler but wrong way through the filter.
I replaced the whole system a number of years ago and at the time reversed the housing direction and used one of these. . .
however, it always dripped oil. Earlier this year I noticed a nick on the seal face and replaced it with another of the same type. It also dripped.
I've now replaced it with one of these -
- and cured the leak. What you can see from the faces of the housings is that as well as the oil chamber being deeper, the seal on the filter sits futher back from the lip of the seal surface and I can only assume that if the rubber seal was slightly over this edge then the oil pressure would be applied to the face of the seal and allow oil to squeeze past - maybe?
Looking at the very original housing it closely resembles my new replacement - except direction.
And the final installation. . .
Anyway - my initial query was meant more as a "was this by design?" and "what does yours look like?" (oo-err missus), but apparently not by design. My original oil system configuration was evidently an aberration. But then again - might be worth checking yours
Gordon
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